When you need multiple parts, or when the materials and finishes that printed models can provide just don’t meet your requirements, molding and casting is another option.
RTV (Room Temperature Vulcanizing) Silicone Rubber can be used to mold your parts and make exact replicas.
Castings can be made in the materials you want, to do all the things that your prototype is meant to do.
A single rubber mold produces an average of 10-15 castings, depending greatly on the complexity of the parts and the materials used. Multiple molds can be used for short-run production.
This particular mold will produce over 20 castings.
This reproduction lens is created by molding an original glass lens from a WWII military vehicle and casting it in high-impact resistant clear polyurethane. Using an original glass lens for the mold has preserved and will recreate any imperfections that were originally cast into the glass. Depending on how much the casting is buffed, it can look even better than the original.
Silicone Medical Device made from an SLA Mold.
Casting has a wall thickness of .029 and has excellent tear strength.